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Search: id:A076878
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| A076878 |
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ceiling(n^(1/n))^n - n. |
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+0
1
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| 0, 2, 5, 12, 27, 58, 121, 248, 503, 1014, 2037, 4084, 8179, 16370, 32753, 65520, 131055, 262126, 524269, 1048556, 2097131, 4194282, 8388585, 16777192, 33554407, 67108838, 134217701, 268435428, 536870883, 1073741794, 2147483617
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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a(1)=0; a(n)=2^n-n for n>1. - Benoit Cloitre (benoit7848c(AT)orange.fr), Nov 28 2002
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MAPLE
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a:=n->sum(binomial(n, k)+binomial(k, n), k=2..n): seq(a(n), n=1..31); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Apr 29 2007
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MATHEMATICA
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Table[Ceiling[n^(1/n)]^n-n, {n, 1, 30}]
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CROSSREFS
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Same as A000325 except for the first term.
Sequence in context: A096766 A111000 A000325 this_sequence A129983 A083378 A116712
Adjacent sequences: A076875 A076876 A076877 this_sequence A076879 A076880 A076881
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KEYWORD
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nonn
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AUTHOR
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Joseph L. Pe (joseph_l)pe(AT)hotmail.com), Nov 25 2002
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